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AV REAR DOOR SPEAKER AV-463 < DTC/CIRCUIT DIAGNOSIS > [NAVIGATION WITH BOSE] C D E F G H I J K L M B A O P Is the inspection result normal? YES >> Replace rear door speaker. Refer to AV-492, "Removal and Installation" . NO >> GO TO 4. 4. CHECK PRE-AMP SIGNAL CIRCUIT CONTINUITY 1. Disconnect AV control unit connector M100 and BOSE speaker amp. connector B27. 2. Check continuity between AV control unit connector M100 and BOSE speaker amp. connector B27. 3. Check continuity between AV control unit connector M100 and ground. Is the inspection result normal? YES >> GO TO 5. NO >> Repair or replace harness or connectors. 5. CHECK PRE-AMP SIGNAL 1. Connect AV control unit connector M100 and BOSE speaker amp. connector B27. 2. Turn power switch to ACC. 3. Push AV control unit POWER switch. 4. Check signal between the terminals of AV control unit connector M100. Is the inspection result normal? YES >> Replace BOSE speaker amp. Refer to AV-501, "Removal and Installation" B11 1 5 Audio signal output B20 16 24 SKIB3609E AV control unit BOSE speaker amp. Continuity Connector Terminal Connector Terminal M100 4 B27 36 Yes 5 28 13 27 14 35 AV control unit Ground Continuity Connector Terminal M100 4 — No 5 13 14 AV control unit connector M100 Condition Reference value (+) ( −) Terminal Terminal 4 5 Audio signal output 13 14 SKIB3609E |